The primary objectives of this trial are (1) To show PK (Pharmacokinetic) similarity of BI 695500 to rituximab. (2)To establish statistical equivalence of efficacy of BI 695500 and rituximab, in patients with moderately to severely active RA (Rheumatoid Arthritis), based on the change in Disease Activity Score 28 (DAS28) score measured at 24 weeks compared to Baseline and the American College of Rheumatology 20% (ACR20) response rate at Week 24.

Must give written informed consent and be willing to follow the protocol.

Male or female participants, between 18 and 80 years of age, who have a diagnosis of moderately to severely active RA for at least 6 months as defined by at least six swollen joints (66 joint count) and at least eight tender joints (68 joint count) at Screening and Baseline (Day 1), and either an erythrocyte sedimentation rate (ESR) of > 28 mm/hour OR a CRP level > 1.0 mg/dL (normal: < 0.4 mg/dL) at Screening. Patients must have had an inadequate response or intolerance to conventional DMARD therapy including at least one TNF inhibitor.

Positive for RF and/or anti-CCP antibodies.

Current treatment for RA on an outpatient basis:

Must be currently receiving and tolerating oral or parenteral MTX therapy at a dose of 15-25 mg per week (dose may be as low as 10 mg per week if the patient is unable to tolerate a higher dose) for at least 12 weeks immediately prior to Day 1. The dose should be stable for at least 4 weeks prior to Day 1 until Week 24. After Week 24 the administration route can be changed at the investigator's discretion.

Patients must be willing to receive oral folic acid (at least 5 mg/week or as per local practice) or equivalent during the entire study (mandatory co-medication for MTX treatment).

Biologic agents and DMARDs (other than MTX) must be withdrawn at least 2 weeks prior to Day 1, except azathioprine and etanercept which must be withdrawn at least 4 weeks prior to Day 1; abatacept, adalimumab, anakinra, certolizumab, infliximab, and golimumab at least 8 weeks prior to Day 1; tocilizumab at least 10 weeks prior to Day 1.

Leflunomide must be withdrawn at least 8 weeks prior to Day 1 or a minimum of 2 weeks prior to Day 1 if after 11 days of standard cholestyramine washout.

If receiving current treatment with oral corticosteroids (other than intra-articular or parenteral), the dose must not exceed 10 mg/day prednisolone or equivalent. During the 4 weeks prior to Baseline (Day 1) the dose must remain stable.

Intra-articular and parenteral corticosteroids are not permitted within 6 weeks prior to Baseline Day 1 or throughout the trial, with the exception of IV administration of 100 mg methylprednisolone 30 to 60 minutes prior to each infusion as this is part of the trial procedures.

Any concomitant non-steroidal anti-inflammatory drugs (NSAIDs) must be stable for at least 2 weeks prior to Day 1.

Patients may be taking oral hydroxychloroquine provided that the dose is not greater than 400 mg/day or chloroquine provided that the dose is not greater than 250 mg/day. These doses must have been stable for a minimum of 12 weeks prior to Day 1. The hydroxychloroquine or chloroquine treatment will need to be continued at a stable dose with the same formulation until the end of the trial.

For participants of reproductive potential (males and females), use of a reliable means of contraception (e.g., hormonal contraceptive, patch, intrauterine device, physical barrier) has to be used throughout trial participation. Females of child-bearing potential must also agree to use an acceptable method of contraception for 12 months following completion or discontinuation from the trial.

Exclusion criteria:

ACR functional Class IV or wheelchair/bed bound.

Primary or secondary immunodeficiency (history of, or currently active), including known history of human immunodeficiency virus infection.

History of IgE-mediated or non-IgE-mediated hypersensitivity or known anaphylaxis to mouse proteins or a history of hypersensitivity to antibody therapy.

History of cancer including solid tumors, hematologic malignancies, and carcinoma in situ (except participants with previous resected and cured basal or squamous cell carcinoma, treated cervical dysplasia, or treated in situ Grade I cervical cancer within 5 years prior to the Screening Visit).

History of pancreatitis or current peptic ulcer disease.

Receipt of a live/attenuated vaccine within 12 weeks prior to the Screening Visit.

Any condition or treatment (including biologic therapies) that, in the opinion of the investigator, may place the patient at unacceptable risk during the trial.

Known active infection of any kind (excluding fungal infections of nail beds), or any major episode of infection requiring hospitalization or treatment with IV anti-infectives within 4 weeks of the Screening Visit or completion of oral anti-infectives within 2 weeks of the Screening Visit.

History of deep space/tissue infection (e.g., fasciitis, abscess, osteomyelitis) within 52 weeks of the Screening Visit.

History of serious infection or opportunistic infection in the last 2 years.

Any neurological (congenital or acquired), vascular or systemic disorder that might affect any of the efficacy assessments, in particular, joint pain and swelling (e.g., Parkinson's disease, cerebral palsy, diabetic neuropathy).

Currently active alcohol or drug abuse or history of alcohol or drug abuse (as determined by the investigator) within 52 weeks of the Screening Visit.

Treatment with IV Gamma Globulin or the Prosorba® Column within 6 months of the Screening Visit.

Participation in any previous clinical trial within 12 weeks of Screening.

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01682512